The easiest 3D printed robot you can assemble and program using Wemos D1 Mini Shields and Arduino IDE, powered by ESP8266. Made in Brazil, Coisado no Ceará.
Assembly Instructions on WIKI http://github.com/triwaca/openDecabot/wiki
Open Decabot® uses the ESP8266 controler, in the Wemos Mini form factor, wich allows to use small shields to expand its capacities. In the simplest version, this robot uses a LED matrix shield and a custom connection shield, besides the Wemos D1 mini. The custom shield can be build with a PCB perfboard, a few pin header connections, and some soldering skills.
By using the Espressif ESP8266 platform, the open Decabot® is nativelly equiped with Wi-Fi capabilities, allowing great IoT experiences, such as remote control and telemetry.
More information about Wemos platform and a list of main shields available can be found on www.wemos.cc .
The open Decabot® robot uses two 360 servo motors to drive its wheels. It's the simplest solution for small robots, since the servo motors didin't require H bridge circuits (they already have those inside!) and can be connected directly to the ESP8266 pins.
You can assemble your Open Decabot® using 3D printed parts. The basic chassis uses only 8 3D printed pieces, and can be assembled using a few screws. The 3D files can be found on 3dPrint folder.
Under the open Decabot® you can find a 4 x AA battery support, who can supply up to 6V directly to ESP board. This option simplifies the hardware, since the Wemos Mini board can hold the maxminum 6 volts, lowering the tension to 3 volts. Users can hack the project to use LiIon batteries, combined with the Wemos LiPo Battery Shield (https://www.wemos.cc/en/latest/d1_mini_shield/battery.html) for charging and step up the voltage to 5 volts.
There is a hatch at the upper part of the robot who can be used to access the USB port (for firmware/Arduino sketch update), and other wiring and shield needs.
- 1 x Wemos D1 Mini ESP8266 controller
- 2 x Servo 5V 360
- 1 x Wemos LED Matrix Shield
- 1 x custom PCB board (check wiki how to build one) or 1 x Decabot Mini Shield PCB (see /decabotMiniShield folder)
- 1 x battery support for 4 x AA
- 1 x acrylic frontface + 2 hallen 3mm screws (optional)
- 7 x screws 3mm, 12mm long
- 2 x rubber o-ring for wheels, size 2" or 50mm (ref: DN50)
- 4 x AA batteries
Wemos platform does not have a simple shield board to connect servos, so you need a homemade board to use. It's goal is just to simplify the connection between the controller and the motors. A homemade PDB board can be assembled just to connect the main components to the Wemos board: Battery to 5V pin, and servos to D0 and D6 pins, as shown below:
Help funding this project by buying our dedicated shield. It is the easiest way to enjoy all the possibilities of your Open Decabot Robot!
- Easy access to Servo connections
- On-off switch
- Included buzzer for sounds
- Easy connection for extra sensors, such as line-folowing sensors
- Dedicated connection to Gyroscope/Accelerometer, for mapping projects
- Dedicated connection to I2C modules, such as OLED displays, distance sensors, RGB sensors and RFID/NFC sensors
More information about commercial partnership on WIKI soon.
The Arduino sketches can be found on /ArduinoSketch folder. You can simply copy this folder inside your Arduino folder on your computer, and open the .ino files.
Remember that Decabot platform is based on ESP8266 chip, in Wemos D1 Mini form factor. Your Arduino IDE must be proper set to manage ESP8266 family. To se if it is ready, go to Tools menu, then Boards, and look for ESP8266 boards. You must find Wemos D1 Mini there. If not, google for installing ESP8266 on Arduino IDE.
Some sketches uses libraries who must be installed before. See instructions on each sketch how to proceed.
The 3D source project was all designed on Tinkercad (yes!), and can be forked using the link below: https://www.tinkercad.com/things/cXxCpU8HWDP-opendecabot-mini-v13
Besides this project is open source, the Decabot® name is a registered trademark from Decano Kits Company, and should not be used without proper consent.
Open Decabot® project is licensed under CC BY-NC-SA 4.0. You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes .
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
https://creativecommons.org/licenses/by-nc-sa/4.0/
